Value Collection MP72026 Hex Socket Cap Screw 4-40 Unc 50 Pack

Product Description

The VALUE COLLECTION MP72026 is a 4-40 UNC hex socket cap screw designed for precision fastening in tight or recessed installations where a standard hex head cannot be used. Manufactured from alloy steel with a black oxide finish, this screw offers improved corrosion resistance and reduced light reflection compared to bare steel. The 3/32-inch internal hex drive accepts a standard hex key or Allen wrench. The screw is fully threaded along its 3/4-inch length under head, maximizing thread engagement across the full grip range. This fastener is suitable for use by machinists, maintenance technicians, and assembly professionals working with metal fabrication, instrumentation, or mechanical assemblies.

This cap screw is suited for applications requiring a low-profile, recessed fastener in 4-40 UNC tapped holes. Typical uses include panel mounting, jig and fixture assembly, instrument enclosures, and light mechanical assemblies where space constraints prevent the use of a standard external-drive fastener. The black oxide coating provides a clean appearance appropriate for finished assemblies or equipment with cosmetic requirements. Sold in a package of 50 pieces, this quantity suits shop stock or recurring maintenance needs.

Key Features

• 4-40 UNC thread size for compatibility with standard inch-series tapped holes
• Fully threaded body with 3/4-inch length under head for maximum thread engagement
• 3/32-inch hex drive accepts standard hex key tools
• Alloy steel construction provides strength appropriate for mechanical fastening applications
• Black oxide finish improves corrosion resistance and reduces reflectivity compared to bare steel
• Meets ANSI B18.3, ANSI B18.8.2, ANSI B2.2, and MS16555 fastener standards

Compatibility

Designed for use in any application requiring a 4-40 UNC socket cap screw with a 3/4-inch length under head and a 3/32-inch hex drive, conforming to ANSI B18.3 and MS16555 standards.

Installation Notes

Installation is performed with a 3/32-inch hex key or Allen wrench; use of the correct drive size prevents stripping of the socket recess. Ensure the mating tapped hole is clean and properly formed to 4-40 UNC specification before installation. De-energize any equipment and follow applicable safety lockout procedures before fastening or removing hardware in electrical or mechanical assemblies. Do not over-torque; alloy steel cap screws at this thread size are susceptible to thread stripping if force is applied beyond the fastener rating.